Component Inspection

Engine

Engine Control - P2187 System Too Lean at Idle (Bank 1) - Component Inspection

System Inspection

1. Check PCV
(1) IG "OFF" and remove PCV valve from rocker cover.
(2) Insert a thin stick into the PCV valve from the threaded side and verify that the plunger is moving.
(3) Is the PCV valve normally moving?





2. Check injector for normal operation
(1) Start engine.
(2) Check its RPM decrease when doing the injector's actuation test.
(3) Is there any cylinder with no change in RPM or only a small change in RPM?





3. Check MAFS
(1) IG "OFF" and install a scantool.
(2) ENG "ON" and monitor "MAFS" data on the service data.
(3) Monitor signal waveform at terminal 1 of MAFS with scantool.

Specification : Signal waveform will be displayed as follows.
(Be aware that the signal of MAFS is not voltage display but frequency display.)




Fig 1) Idle
Fig 2) Acceleration
(4) Are both service data and signalwave form dispayed correctly?